Difference Between the 3 types of Light Paths

Hi, I would like to know what’s the difference between the 3 types of Light Paths; Direct Light, Full Global Illumination, and Limited Global Illumination. I would also like to know what does the Transparency and Bounces options change? Glossy bounces 128, what does that mean? A brief explanation would be fine.

Thank you!

Those 3 are just integrator presets to set bounces http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Integrator#Bounces
For Global Illumination (aka ambient light, bounced light) you might want many bounces because otherwise indirect/bounced light might not find its way to light everything in the scene or leave areas too dark/noisy. Direct lights (lamps) don’t need as much bounces because they are… direct.

Diffuse/glossy/transmission reflection bounces are bound by global minimum/maximum bounces, but you can set those individually.

If you want to understand what those are, you need to know about how path tracing works


Sweet. Thanks for the links.